<!DOCTYPE html>
<html>
<head>
<title>operationError.html</title>

<meta name="keywords" content="keyword1,keyword2,keyword3">
<meta name="description" content="this is my page">
<meta name="content-type" content="text/html; charset=UTF-8">

<!--<link rel="stylesheet" type="text/css" href="./styles.css">-->

</head>

<body>
	<p>输入的编号已存在！</p>
	<p>
		<!-- 超链接返回上一页 -->
		<a href ="#" type=”button” name=”submit” onclick="javascript:history.back(-1);" >返回上一页</a>
	</p>
</body>
</html>
